<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
		<style type="text/css">
			*{
				margin:0;
				padding:0;
			}
			.img1{
				width:98%;
				border:5px solid black;
			}
			p img{
				width:30px;
				height:30px;
			}
			.img2{
				width:100px;
				height:100px;
				margin:20px;
				border:2px solid red;
				cursor:pointer;
			}
		</style>
	</head>
	<body>
		<img src="../img/1.png" alt="error" class="img1">
		<p>
			<a href="../demo.html"><img src="../img/7.png" alt="error">返回上层</a>
		</p>
		<img src="../img/3.jfif" alt="error" class="img2">
		<img src="../img/4.png" alt="error" class="img2">
		<img src="../img/2.gif" alt="error" class="img2">
		<img src="../img/6.jpg" alt="error" class="img2">
</html>
